Form-Novalidate

<!DOCTYPE html>
<html lang="en-US">
<head>
    <title>Welcome in the Angular JS</title>
    <script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.4.0-rc.1/angular.min.js"></script>
</head>
<body ng-app>
    <div>
        <form name="sampleForm" novalidate>
            First Name :<input type="text" ng-model="firstName" />
            Last Name :<input type="text" ng-model="lastName" />
            <button type="submit">Submit</button>
        </form>
    </div>
</body>
</html>
Output